Photoheterotrophic Process in Surface Seawater Environments

carbon assimilation, and thus their growth is largely facilitated under light conditions. We are now aware of their ubiquitous distribution in the ocean. The questions are how do they fluctuate in time and space, and what are the factors that control their dynamics. In this study, we report on the AAPB distribution and their temporal variation in Otsuchi Bay, and we also report the fraction of actively growing AAPB in various environments.